Molitor, L. ; Klostermann, M.* ; Bacher, S. ; Merl-Pham, J. ; Spranger, N. ; Burczyk, S.* ; Ketteler, C. ; Rusha, E. ; Tews, D.* ; Pertek, A. ; Proske, M. ; Busch, A.* ; Reschke, S.* ; Feederle, R. ; Hauck, S.M. ; Blum, H.* ; Drukker, M. ; Fischer-Posovszky, P.* ; König, J.* ; Zarnack, K.* ; Niessing, D.
Depletion of the RNA-binding protein PURA triggers changes in posttranscriptional gene regulation and loss of P-bodies.
Nucleic Acids Res. 51, 1297-1316 (2023)
The RNA-binding protein PURA has been implicated in the rare, monogenetic, neurodevelopmental disorder PURA Syndrome. PURA binds both DNA and RNA and has been associated with various cellular functions. Only little is known about its main cellular roles and the molecular pathways affected upon PURA depletion. Here, we show that PURA is predominantly located in the cytoplasm, where it binds to thousands of mRNAs. Many of these transcripts change abundance in response to PURA depletion. The encoded proteins suggest a role for PURA in immune responses, mitochondrial function, autophagy and processing (P)-body activity. Intriguingly, reduced PURA levels decrease the expression of the integral P-body components LSM14A and DDX6 and strongly affect P-body formation in human cells. Furthermore, PURA knockdown results in stabilization of P-body-enriched transcripts, whereas other mRNAs are not affected. Hence, reduced PURA levels, as reported in patients with PURA Syndrome, influence the formation and composition of this phase-separated RNA processing machinery. Our study proposes PURA Syndrome as a new model to study the tight connection between P-body-associated RNA regulation and neurodevelopmental disorders.
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Publication type
Article: Journal article
Document type
Scientific Article
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Editors
Keywords
Single-stranded-dna; Postnatal Brain-development; Messenger-rna; Stress Granule; Alpha; Reveals; Transcription; Association; Repression; Complexes
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Language
english
Publication Year
2023
Prepublished in Year
0
HGF-reported in Year
2023
ISSN (print) / ISBN
0305-1048
e-ISSN
1362-4962
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Volume: 51,
Issue: 3,
Pages: 1297-1316
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Oxford University Press
Publishing Place
Great Clarendon St, Oxford Ox2 6dp, England
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0000-00-00
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Peer reviewed
POF-Topic(s)
30203 - Molecular Targets and Therapies
30201 - Metabolic Health
30204 - Cell Programming and Repair
Research field(s)
Enabling and Novel Technologies
Helmholtz Diabetes Center
Stem Cell and Neuroscience
PSP Element(s)
G-503091-001
G-505700-001
G-502210-001
G-500800-001
A-630700-001
Grants
Ulm University
Science Award of the Care-for-Rare Foundation
SPP 1935
SFB 902
Heisenberg professorship
Deutsche Forschungsgemeinschaft (DFG)
Copyright
Erfassungsdatum
2023-01-24